Engine governor control means



Oct. 7, 1952 c. D. CHRISTIE 2,612,965 ENGINE GOVERNOR CONTROL MEANS Filed Nov. 15, 1947 whim IE IVE-=2- ]N V EN TOR. Qwzmfi 0/9/57/5 MMPQ Oct. 7, 1952 c. D. CHRISTIE 2,612,965

ENGINE GOVERNOR CONTROL MEANS 2 SHEETS-SHEET 2 Filed Nov. 15, 1947 I all M/MM 94 7 4:

Patented Qct. 7, 1952 Chester 1). Christie, South Euclid, ohm, assignor to Eaton Manufacturing Company, Cleveland, Ohio, a; corporation of Ohio.

Application November 13, 1947,Serlal'No. 785I658 2 This invention relates to internal combustion engines and'more particularly to engine'speed "governor control thereof.

Broadly the invention comprehends the pro- "vision of a speedcontrol governor for internal combustionengines that is automatically regullated to predetermined desired vehicle speed ranges 01-1 vehicle drive gear setting. Although engine control governors have been extensively employed on internal combustion ...engines nonehas been devised that can beautomatically regulated to allow for control ofengine RLP. MJformaximum H. P. for one condition of xoperation of the associated vehicle andat the same time' provide 'for control of another range a of engine R. P. M.'for a different conditioner oporation of the vehicle, The present invention 1 through the automatically controlled operation of anelectrically operated solenoid associated with the normal adjusting meansof a conventional'type of governor provides for the regulation ofthe governor to predetermined desired operatingconditions ofthe engine.

'Anwobiect of the invention is the provision of an :engine speed governor in association with an internal combustion engine tha-t is automatically :nresponsive and regulatable relative to vehicle speed for limitinglthe engine R. P. M. for different=conditions of operation of the vehicle.

'Another object of the invention is the pro vision of an engine speed governor in. association with an. engine that is regulatable for dif ferent settings ofengine R. P. M. in accordance with gear ratio changes-of gearinechanism asso- :oiated with the engine.

.uiafurtherlobject of the invention is the provision of a governorfor regulating the operating speed of an automotive vehicle engine for-differ- "entjconditions of vehicle o eration, said governor being automatically for different settings in rexsponseto solenoid -mechanism associated there eonims. (oust-fear) 1 provision of an i automotive vehicle i engine equipped Withaspeed control governor permitting of the automatic proper controlled operation of the engine from a predetermined setting so as to be free from vehicle-operator-molestation or change oncejthe setting is made. i

Other objects and. advantages of the invention I will appear from the following descriptionv taken in connection with the drawings, formingapart of the specification; and in which: H i

Fig. 1 is a partiallycross-sedtiohalized view of aregulated enginespeed governorin association with a diagrammatically illustrated electrical control meansftherefor;

Fig. 2 is a top planview .ofthe regulated'en gil'le speed "governor; U

Fig. 3 is a "further modifled electrical controlling systernlior .thegovernorwof Figs. land 2 and;

. Fig. 4 is'ai yet further modifledelectricalcontrolling system for the governor of Figs. 1 and2.

-The presently devised' regulatable "engine speed governor is intended for use in overcomin objectionable conditionsprevalent relative to the conventional type of governor employed by engine drivenautomotive vehicle.

It is the general case in theause of conventional engine speed control governors,*that theengine manufacturer usually r'ecommends thatthe maximum engine-R. P. shoulcl'not exceed :the

speed required for maximum'IL P. outputwith the result that in setting the .fgovernor for the recommendedmaximum'engine speed-operation for peak H. P. in lowgearthe road speed in high gear is excessive. As an example if in the case of an engine rated to give maximum H. P. at,

3200 R. P. M. "the" conventional type of speed gov- *ernor employedisset for this operatiomwhich is desirahleyitm'ust be accepted that in high 1 with, said solenoid mechanism in turnbeing controlledby automotive speed controlled gear shifting mechanism associated in the electrical'cir edit :for the solenoid.

A yetfurther object of the invention is the gear the vehicle can reach aspeed" of say 57 M. P. H. whereas on the-othe'r'hand if itis of greater importance that the mairimum vehicle speedbe limited to 45 M. P. H. then the engine speedymustbe 'helddown to 2500. Therefore qvvith the governorset to control the maximum allowable road speed of the vehicle thelow gear driving condition thereof will necessarily suffer because the engine will be operating 700 R... P; M.

. undenpeak performance conditions.

These conditions of-operation can be circumvented through the provision of an enginespeed governor thatcan be regulated tovarying conditions of vehicleioperationsuchthat for say high speed gear operation of an engine driven vehicle the governoris initially adjusted for maxof the'govern'or. The electrical circuit for the solenoid is adapted to be associated with appropriate make and break means adapted to be actuated by mechanism associated with gear changing or drive transmitting means associated with the vehicle of which the governor controlled engine formsa part. 7 v

There are several conditions of operation of a vehicle embodying a governor controlled engine where it is desirable to regulate the governor setting for controlledR. P. M. operation of the engin and accordingly the presently devisedgovernor is adapted to be. changed from its initial settingto another desired setting in accordance with vehicle speed change" gear shifting or predetermined speed of a drive transmitting member of the -governor.- The ultimate condition of operation obtained is that the governor is actuated from an initial adiusted engine speed control for one desired phase of operation of the.

vehicle to another engine speed control position for'anoth'er desired phase of operation of the vehicle.

Referring to the drawings for more specific detailsof the invention it] represents generally an engine speedcontrol governor adapted to be interposed between the carburetor and engine rnanifold of an engine, not shown.

The governor ii! comprisesa govern-or body it having a pair of orifices Hi there adapted to match comparable orifices of a carburetor, not

shown for the passage of fuel mixture.

A pair of throttle plates it, one for controlling the passage of fuel mixture through each orifice, are mounted upon a shaft 58 journalled in the governor body. A cam member 28 is fixedly secured upon the shaft E8 and has attached at one end thereto a leaf spring 22 which in turn is socured at its free end to a coil spring The coil spring is secured at its other end to an adjusting screw 25 which isreceived in threaded engagement bya threaded sleeve, 28 slidably recipro cable in. a bore Bil in the body or" the governor.

- The sleeve 23 has secured in one end thereof ppositely disposed from screw 25 a solenoid plunger 32 which is mounted for reciprocable movement in a bore 3 30f a conventional type of solenoid 36.

The solenoid 3*3 is suitably secured with relation to the governor body by an intermediate housing member 38 threaded upon the governor body between the governor proper and solenoid.

The adjusting screw 26 provides for initial regulaticn of a spring tension on the throttle plates it for controlling the maximum flow cf fuelmixture to the intake manifold of the engine from I the carburetor and thus controls the engine for a predetermined. desired high gear maximum:

rnent of member ii? as governed by the trans member 38 the desired distance upon the goverv nor body.

The air gap 40 is adjusted relative to desired solenoid plunger movement as predetermined for a desired condition of operation of the vehicle such that with the solenoid in operation the plunger places the coil'spring under a relatively heavy tension and therefor a relatively high flow of fuel mixture is necessary to eiiect a closure of the throttle plates as compared to the low flow required for closure under the initial light setting of the spring tension on the throttle plates.

As shown by Fig. 1 the solenoid is arranged in an electrical circuit i2 which includes a storage battery 41 i as a source of electrical power and a make and break switch 26 controlled as by a gear 7 shifting mechanism 48 associated therewith. The gear shift it is of the two position variety and as shown by the drawings is in high gear vehicle transmission operation. With the shift 58 in high the governor is {set formaximum engine operation for controlled maximum speed of a vehicle with which the governor controlled engine and gear shiftingmechanism is to be associated. With the air gap to set for predetermined regulation of the governor for a low gear operation of gear shift mechanism it, the associated vehicle in low gear driving condition can be operated at maximum engine R. P. M. for maximum H. P. thus permitting peak engine performance.

The solenoid-governor as shown by Figs. 1 and is also adapted for use whenit is desired to control the same relative to the predetermined speed operation of a specific related driving member of an associated vehicle and is so illustrated by Fig. 3 wherein the electrical control circuit for the solenoid operation includes a conventional speed responsive switch 59 controlled as by a driven member coupled to a driven member not shown of a vehicle transmission 5%. The switch 53 is so set relative to the governor and solenoid regulation that upon predetermined speed of attainmission speed is actuated to opennposition to break the electrical circuit and disengage the solenoid from actuation. With the disengagement of solenoid operation and movement of the governor to its initial setting all high speeds of operation with a predetermined limit will be controlled through the governor as it so efiects the engine R. P. M. operation.

The control system of Fig. 4 is an amplification of that shown by 3 through the addition of an electromagnetic change speed adapter 56 arranged in dI'iVil'ig connection with the driven member bicontrolled as bythe vehicle operators actuation of two speed axle gearing 58 having a maize and break switch 69 thereof arranged in the circuit. The speed responsive switch 50 shown in Fig. l is adapted to operate similarly with that shown in circuit in Fig. 3 for control of the governor operation but the input speed to the switch varies in accordance with the axle operation as it effects changes in the speed adapter connected with member 52. As such the switch 58 is effected directly by the speed of the transmission and switch as controlled by the 7 sons skilled in the art. Thi invention is, therefore limited only as indicated by the scope of the appended claims.

, I 5 What I claim is: 1. In combination with an automotive vehicle, an engine therefor, a transmission driven Irom the engine, a multiple'speed axle driven from the transmission, a speed control governor for the engine comprising a housing, an orifice therethrough, and a tension adjustable resiliently loaded throttle valve controlling the orifice, electromagnetically actuated means for changing the normal tension setting of the governor throttle valve, a power supplied electrical circuit having the electromagneticall'y actuated means as a part thereof, a speed controlled switch in the circuit responsive to transmission speeds, a speed change adapter drivingly connected between the transmission and switch, and a second switch in the circuit responsive to shifting of the axle ratios for actuating the speed change adapter.

2. In combination with a vehicle, an engine therefor, a, speed change transmission driven therefrom, a velocity type engine speed control governor comprising a housing interposed between the carburetor and the intake manifold of the engine having an orifice therethrough com municating on opposite ends thereof with the carburetor and manifold, a throttle plate pivotally mounted on the housing in the orifice for controlling fluid flow therethrough, adjustable spring tension means for predeterminedly tensioning the throttle plate including a coil spring interconnected to the throttle plate on one axial extremity thereof, and an adjustable screw con- .1 rotation of the transmission for controlling the supplyof current to the coil.

CHESTER D. CHRISTIE.

REFERENCES CITED The following references are of record in the file of this patent: 20

UNITED STATES PATENTS Number Name Date 1,843,960 Sticelber Feb. 9, .1932 2,130,088 Howard Sept. 13,1938 2,170,744 Adler Aug. 22, 1939 2,193,224 Cowles Mar. 12, 1940 2,225,206 Cassels Dec. 17, 1940 2,236,669 Breer et a1 Apr. 1, 1941 2,242,832 Mennesson May 20, 1941 2,350,431 Vatter June 6, 1944 

